A multi-tiered wavefront sensor using binary optics

Conference · Sun May 01 04:00:00 EDT 1994

OSTI ID:10144421

Neal, D R; Warren, M E; Gruetzner, J K; Smith, T G; Rosenthal, R R ^[1]; McKechnie, T S ^[2]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. POD Associates, Inc., Albuquerque, NM (United States)

Wavefront sensors have been used to make measurements in fluid- dynamics and for closed loop control of adaptive optics. In most common Shack-Hartmann wavefront wavefront sensors, the light is broken up into series of rectangular or hexagonal apertures that divide the light into a series of focal spots. The position of these focal spots is used to determine the wavefront slopes over each subaperture. Using binary optics technology, we have developed a hierarchical or fractal wavefront sensor that divides the subapertures up on a more optimal fashion. We have demonstrated this concept for up to four tiers and developed the wavefront reconstruction methods for both segmented adaptive optics and continous wavefront measurement.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 10144421
• Report Number(s): SAND--94-0577C; CONF-940391--4; ON: DE94010393; BR: GB0103012
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400
440600
47 OTHER INSTRUMENTATION
APERTURES
COMPUTER-AIDED DESIGN
DESIGN
FABRICATION
FLUID FLOW
HEAT TRANSFER AND FLUID FLOW
MEASURING INSTRUMENTS
OPTICAL INSTRUMENTATION
OPTICAL SYSTEMS
WAVE FORMS
WAVE PROPAGATION